It depends on the font you're using for your blog.Some have up and down arrows, others don't.

I believe you're using Garamond on this blog, so you should be fine.

The short way ↑↓

Copy and paste the above arrows.

The long way Assuming you're using Windows XP

1) Go to Start -> Programs -> Accessories ->System Tools -> Character Map2) Select Garamond as your font3)Scroll down and look for the up and down arrows4)Select them (use 'Select Button')5) Copy them (use 'Copy Button')

and you're good to go.There is another way to get arrows, but I think I should charge for any extra "consultancy" work I do here! ;-)